The 4-sided impact roller - guidance for practitioners

Date

2023

Authors

Scott, B.
Jaksa, M.

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Conference paper

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Proceedings of the 14th Australia and New Zealand Conference on Geomechanics, 2023, 2023, pp.1-4

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Brendan Scott and Mark Jaksa

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Australia and New Zealand Conference on Geomechanics (2 Jul 2023 - 6 Jul 2023 : Cairns, QLD)

Abstract

Rolling Dynamic Compaction (RDC) imparts energy to the ground via the use of a heavy non-circular module that rotates as it is towed, causing it to fall to the ground and compact it dynamically. This paper summarises the predictions of energy imparted to the ground from a single impact for both the standard (8-tonne), and heavy duty (12-tonne) 4-sided impact rollers. Several published case studies are summarised for the applications of: (1) improving ground in situ; and (2) compacting soil in thick layers. This paper addresses the need for these two distinctly different applications of RDC to be treated separately. Finally, this paper augments deep dynamic compaction theory and provides relationships for estimating the depths of soil that can be improved in situ, and layer thicknesses capable of being compacted by RDC.

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